build(deps): bump @angular/common from 21.0.8 to 21.2.20

Bumps [@angular/common](https://github.com/angular/angular/tree/HEAD/packages/common) from 21.0.8 to 21.2.20.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/v21.2.20/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits/v21.2.20/packages/common)

---
updated-dependencies:
- dependency-name: "@angular/common"
  dependency-version: 21.2.20
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -19,7 +19,7 @@
   },
   "dependencies": {
     "@angular/animations": "^21.0.0",
-    "@angular/common": "^21.0.0",
+    "@angular/common": "^21.2.20",
     "@angular/compiler": "^21.0.0",
     "@angular/core": "^21.0.0",
     "@angular/platform-browser": "^21.0.0",